(3)	Earnings per Common Share

Basic earnings per common share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted earnings per common share is computed by dividing net income by the weighted average number of common shares outstanding after giving effect to the potential dilution, if applicable, from the assumed exercise of stock options into shares of common stock as if those stock options were exercised and the assumed lapse of restrictions on restricted stock units.

The following table summarizes those effects for the diluted earnings per common share calculation (in thousands, except per share amounts):

	Thirteen weeks ended
	May 5, 2018		April 29, 2017

Net income	$	30,454	$	18,966
Weighted average number of common shares outstanding – Basic		62,169		60,880
Incremental shares from the assumed exercise of outstanding stock options and vesting of restricted stock units		3,455		3,509
Weighted average number of common shares outstanding - Diluted		65,624		64,389
Earnings per common share – Basic	$	0.49	$	0.31
Earnings per common share - Diluted	$	0.46	$	0.29

The effect of the weighted average assumed exercise of stock options outstanding totaling 124,738 and 195,626 for the thirteen weeks ended May 5, 2018 and April 29, 2017, respectively, were excluded from the calculation of diluted weighted average common shares outstanding because the effect would have been antidilutive.

The effect of weighted average non-vested restricted stock units outstanding totaling 26,333 and 0 for the thirteen weeks ended May 5, 2018 and April 29, 2017, respectively, were excluded from the calculation of diluted weighted average common shares outstanding because the effect would have been antidilutive.